Pistonless pump.



l. M. PRESSLER.

PISTONLESS PUMP.

APPLlcATloN min mm2/2l ma.

2 SHEETS-SHEEY I.

Patented Non 14, 19%.

A ima/vers vllllallll@ l.ion n. rarissime, or Jncasonviniin, ranas.

EISTONLESS PUMP.

`citizen of the United States, and resident iiiiipS, of which the ilollowing'is a speci-` fication.

" f n n hay present invention relates generally to f pumps and more particularly to water vpumps thou'gli'capable of use in connection with other'lluids, iny primary object being to provide an eil'ective pistonless pump in order that it may be adaptable for use without undue wear in lolcalities where sand predominates with the fluid to be pumped.

further object of my invention is to provide a simple compact arrangement which will automatically operate in a continuous manner, thus obviating constant attendance and frequent repair.

rllhe objects sought to be attained and the advantages derived froiii'my present invention, have to do more particularly with the construction and operation of its several parts as hereinafter described with respect to the accompanying drawings, forming a part of this specification, and whereinltigure'l is a vertical section through 'my improved pump, illustrating the parts in position at the beginning of inllow ot water to the pump casing. Fig. .2 isa similar view illustrating the parts in position at the end of the inflow of water thereto. Figs. a, i, 5, und respectively on lines 3-3, lr-4, {1 -5, and 6-6 of Fig. 1. Fig. 7 is a detail section through the three-way valve, to be hereinafter speciiically referred to. Fig. 8 is a vertical section through tlie two lower floats. Fig.. 9 is an enlarged vertical section through the upper portion of Fig. l, showing the parts in position at the beginning of the outflow of fluid. Fig. 10 is a detail vertical section through the two upper floats, the' lower one being latched.l Fig. ll is a similar view, the lower float being released. Fig. l2 is a detail section teken on line l2-12 of Fig. l1. Fig. 13 is a detail section taken substantially on line 13-l3 ci Fig. 12.

Referring now to these figures, my iinproved puinp consists of an elongated .cylindrical casing to be lowered within a well casing 26 as particularly shown in Figs. fand 2, and almost or entirely submerged Specification of Letters Patent.

5 are detail cross sectionstalren rammen New. ie, ieie.

. l application flied March aa, ieie. no. tasso.

therein below the normal level of the water therein, the upper end of the pump casing 25 being closed in air tight relation 'by means of ascrew cap 27, and its lower end being provided with a valved seat 28v upwardly presented'and for the reception of justable in a guide 30 so as to' permit the valve to raise under the external pressure and permit` the entrance of water as seen in 1,7eXcept when the pressurepwithin casing exceeds the external pressure, at which time the valve 29 will be closed.

Centrally depending within the cylindrical casing 25, is a cylindrical pump barrel 3l of substantially reduced diameter, as compared with'that of the casing, 'so as to ioi'in an annular space between the same and the casing, the lower end of the barrel 31 terminating in a valved housing 32 above the lower end of the casing 25, and the upper end thereof beingI threaded within a central bearing of the casing cap 27 adjacent the lower end of an upwardly and outwardly leading water outlet pipe 33, by which the water pumped from the well may be carried away to a suitable point of disposition or'use. Y

Leading downwardly a nd inwardly through the cap 27 upon relatively opposite sides of the water outlet pipe 33, are a pair of air pipes 3ft and 35, the former being the inlet air 'pipe and the latter the air exhaust pipe, the inner ends of these pipes, within the casing 25, communicating respectively withfvalved air tubes 36 and 37 at the lower ends of which are valve seats dfor valves 38 and 39, the valve seats Ll0 and ll being 'best seen in Fig. 9.

The valve seat 40 of the inlet air tube 36 surrounds :1n-opening a2 through which the interior of the tube is in communication with the annular space around the barrel 3l when the valve 38 is open, the valve just mentioned, it being noted, seats downwardly upon its seat 40 and is provided with a depending stem a3 the lower end' oi which is connected to a piston All operating vertically within the piston cylinder 45, leading from relatively opposite ends of which cylinder are air tubes 46 and 4:7. Leading also from the `upper end of the cylinder adjacent air tube 46, is an exhaust air tube 18 having a checlr valvetherein opening away from the cylinder 45, the opposite end of airtube 48 being connected to and communicating 'a valve 29, the stern of which is freely adwith the exhaust air tube 37 before mentioned.

The air tubes 46 and 47 connected to opposite ends of the cylinder 45,1ead to' a threeway valve 50, leading also to which 1s an air tube 51 extending from the inlet air tube 36l and having a valve 52therein opening away from 'the sai-d air tubeBG, the movements of the three-way Avalve 50 being controlled by an arm 52 dependingtherefrom-and through the slot of a valve-actuating rod 53 extending vertically inthe space between the barrel 31 and thev casing 25 for nearly the full length of the barrel 31 and to which rod, ad- `iacentthe upper end thereof, is secured the valve 39 of the exhaust air tube 37.` Thus, as will be seen by comparisonof Figs. 7 and 9, when the valve-actuating rod 53 is in its uppermost position with the exhaust valve 39 seated against the exhaust valve seat 41 and the arm 52 of the three-Way valve 50 in raised position, the valve50 establishes communication between the air tubes-t7 and 51 so as to admit the inlet air through said air tubes and into 4the lower end of the piston cylinder l5, raising the piston l-.l and lifting the inlet air valve 38 upwardly off of the seat 40 so as to permit ingress of air from the air fas inlet 3l to the space between the barrel 31 and the casing 25 upon the surface of the watertherein. ln this way the necessary pressure is obtained upon the surface of the water within the casing 25 to Aforce the column of water downwardly therein and upwardly within the barrel 31 through the lower upwardly opening valve 32 of the latter located within-its lower valve seat 3 2, the pressure at the same time closing the 4' water intake valve 29 at the lower end of the .space around the barrel 31 exhaustingout through the exhaust air tube 37. Thus with an' tubes i6 and 47 communicating, pressuri` is equahzed within the plston' cylinder 45 upon opposite sides of the piston 44, and ex-` cess pressure is permitted to escape through the valved-tubeI 4S to the exhaust tube 37,

the inlet air in lthe air tube 3G acting then upon the upper face of the inlet valve 38, of less diameter than thatof piston 44, to lower valve 38 upon its seat l() and th us eut olii' the intake ofair to the casing. i Upon the lowering of pressure within the casing, the water intake valve 29 then opens underthe external pressure, and water from the well finds its way vfreely within the casing 25, the lower valve 32a of the barrel 31 being then held downwardly in .closed position against its seat 32P by means of the pressure of the water column within the barrel 3l.

rlhe upper and ylower portions of the valve actuating rod pass respectively through bearings 55 and 56 and adjacent these bearings, the .said valverod is respectively pro-- vided with stops 57 and 58. Freely slidable on the valve rod 531m the space between the barrel 31 and the casing 25, are pairs of floats, of which the floats of ltlre upper pair' are indicated at 59 and 60, and the floats of the lower pair are indicated at 61 and 62, the upper floats acting at the proper'time againstvthe upper stop 57 of the valve rod, and the lower floats operating also at the proper time f against the lower stop 58 of the valve rod. The lower floats 61 and 62 operate also upon guides G3 and GL'the former of which is conimon'also to the upper floats 59 and 60, and the latter of which is of a length approximately that of the combined,movement of the floats 61 andGQ, its ends being secured in brackets (35 so as to prevent longitudinal movement thereof.

The guide 64 has an intermediate 'longitudinal slot, as seen in Fig. ,8, and within this slot is intermediately pivoted at G6, a latch jmember (37, the lower end of which is latera'lly extended at 68 and works within an inclined opening within the lower float 62 of the pan-,fthe upper end of the latch ineinber- 67 being thus shiftahle laterally into and out of the slot of the guide (S4 whereby, when shifted outwardly thereof, as seen in Fig. S, it will engage a latch piece 70 at the lower surface of the upper float (31 and thus latch the upper float 61 in raised position until the lower float G2 has lowered to a point adjacent the stop 58 of the valve actuating rod 5?, at which point the inl clined opening of the lower floats will shift the latch 6 7 so to free its upper end from the .upper float and permit the later to drop against the lower float, the'conibined action of these two serving to lower the valve actuatingl rod 53 by their engagement with the stop 58. This action takes place when the water lowers in the casing 25, from the action 'of the air pressure upon the surfacel thereof in driving the water upwardly and outwardly through the barrel 31 and serves to reverse the air valveso as to vcut olf the air inlet and permit the air pressure to exhaust` as before described. The floats 59 and 60 of the upper pair are also mounted.

lll

upon guides, one of which is the beforemen- 32's' tioned guide G3 as shown in Fig. S, and the other of which is a longitudinally immov- 'able guide 71 having an intermediate longitudinal slot in which is intermediately pivoted at 72, a latch member 73 similar to, 1.3@

' although in reversed` position with respect` ,t0, the latch member 67 ibefore-mentioned, the upperiend of latch member 73 being laterally extended as seen at 74 in Fig. 1()

and 4working within an inclined slot- 75 in .is latch piece 76 in the upper surface of thelower float 60 of the pair. Thus, when tbe head of water within the casing rises, the upper floats will rise independently ot' the/lower float 60 by virtue of the/fact that f5 the latter is latched in its lowermostposition. This independent movement of the upper float 59 will continue until the latter is'contlguous `to the upper stop 57 of the valve `actuating rod 53, at which-time the- 20 action of its inclined slot upon'the upper laterally yextended end 74 of the latch/ 73 will shift the .latch laterally and disengage its lower end from the latch piece 76, thus freeing the float 60 which will immediately '25 rise andstrike the float 59, the combined action of the twoA floats upon the stop -57 serving then to raise the valve actuating rod 53, closing the exhaust valve 30, and raisingthe arm 52'of the three-Way valve' 50 soas `to'shift the air controlling parts back to the positionshown in Fig. 9, and again provide, for the inlet 'of air to act uponthe normallevel of -Water Within the casing 25 which air serves to hold'the `exhaust .valve 39 closed, and consequently ymaintain the 4rod 53'in uppermost position until the'combined action of floats 6l and 62 lowers the rod and'opensthe valve 39 in a manner previously described. Thus, from the foregoing it will be'seen 'that I 'provide a compact apparatus vfor the purpose described, the several parts of which are'inclosed within the upperfend of l thecasing 25, and may be entirely removed 'from :the casing with the removal vof the vbarrel 31-to permit of substitution and repair'.

I claim 1. Apumpof the type described'comprlising a -casin'g'having a water intakevalve, a

pump barrel within the casing liaving Valved communication therewith, air inlet and-exhaust pipes, valves controlling communication between said inlet and exhaust pipes and said casing, air actuated means controlling the inlet valve and including a piston connected to the said valve, a cylinder in which said pistonis-movable, a valvcd air pipeconnecting one end of said cylinder 90 with'the said exhaust pipe, a second valved `lair lpipe leading from vthe s aid inlet pipe,

' a p air of cylinder pipes leadmg from ad]a- 5 and exhaust pipes, valves controllmg comcent relatively opposite ends of said Vpiston cylinder, a three-way valve-controlling com- .munication between said cylinder pipes and -the said' second valved air pipe, a valve rod having connections for controlling said three-way valve and also connected to and controlling said exhaust pipe valve, and means for automatically actuating said valve rod including floats having limited movement thereon and with respect thereto, and arranged within the casing yfor actuation by the rise and fall of water therein.

2. A pump of the type described comprising a casing having a fluid intake valve at its lower end, a pump barrel within the casingand having valved communication at its lower end with the casing, air inlet and exhaust pipes, valves controlling communication-between said inlet and exhaustpipes and said casing, air actuated means for-controlling the said inlet valve, 'a valve actuating rod controlling the said air actuated means and also connected to and convalve rod including stops carried thereby' adjacent its upper and lower ends, floats mounted `in pairs and movable upon the valve actuating'rod adjacent theupper and lower ends thereof and adjacent said `stops, each ot saidpairs of floats havinga guide, a latch carried by the guide and'engaging one of the floats of the pair to permit o'frelatiie movementof the otherl floats, the said other floats being provided with means for releasing the latch, all substantiallyv as described.

A pump of the type described comprising a casinghaving a fluid intake valve, a punip barrel within the 'casing having valved communication therewith, air inlet and exhaust pipes, valves co'ntrollingcommunication between the inlet and exhaust pipes and said casing, a pistoncontrolling the said inlet valve, a cylinder in which said piston is movable, a valved air pipe connectingl one end of said cylinder with said exhaust pipe, a second valvedair pi'peleading fromthc said inlet pipe,a pair of cylinder pipes leadingr from adj acentrelatively oppositeends of said piston cylinder, a three-Way valve controlling,communication ibetween ,said cylinder lpipes and the said" second valved air pipe, a valve rod having connections for controlling said three-Way valve vand also controlling said exhaustpipe valve,

munication -between the 'in let and exhaust pipes and said casing, a `p1stoii"centrollmg the said inlet valve, a'cylinderin which said piston. is movable, a valved air pipe coninectingl one end of said cylinder ivith said 'exhaust pipe, a second valved air pipe leading from the said inlet pipe, a pair of cylinderpipes leading from adjacent relatively opposite ends .ofksaid piston cylinder, a vthree-way valve controlling communication between said cylinder pipes and tliefsaid second "valve'd air pipe, a valve rod lia-ving connectionsy for controlling said three-way valveand also controlling said exhaust pipe .fval-ve,land means for automatically actu therein, said Yfloats being arranged inpairs adjacent the upper land lower ends of the i atingsaid valve rod including floats having Ylimited movement thereon and with respect theretaand arranged within the casing for actuation byA the rise and fall of water vfalveactuating rod and of which each pair has a latch engaging one of the floats of the pair and the other float of the other Ipaimis provided with means for releasing said latch.

5. A pump of thetype described comprisl ing a casing having a `water intake valve,

a punip barrel ,within the casing having valved communication tliereivith,A air inlet i and exhaust pipes, .valves 'controlling coin-` inuii'ication bet-Ween said inlet and exhaust pipesand,` saidV casing, air operated means for controlling the said inlet valve, a valve actuating rod carrying the said exhaust pipe'valve and having connections for controlling the said air operated means, and

means for automatically actuating said .valve rod arranged within the casing for fic actuation by the rise and fall of water therein.

. 6. 'A 4pump `of thetype described coin.`

piising a casing having a fluid intake valve,

a pump barrel within the casing having 'valved communication therewith, air inlet and exhaust pipes,l valves `controlling coini'nunication' between said inlet and exhaust pipes and said casing, a' piston controlling the said inlet valve, a cylinder in which said piston is movable having a valved connecv tion with the exhaust pipel and liavingaii' pipes leadinpr from its opposite ends, a-

valved air pipe leading from` the inlet pipe, a three-way valve.controlling` communication between said cylinder pipe Vand the saidvalved inlet.` air. pipe, a valvei'od having'connections for ,controlling said three'- way valve and upon which tlieesaid exhaust pipe valve is slecured,.and means foiiautomatic: ily actuating said valve ,roda'rianged within the casing for `-actuation bytherise and fall of water therein; l!

7. A pump of theitype desci'ibedconip'risinga casing having a fiuid 'intake valve,

a pump bai-rel ivithin the casing having valvedcommunication therewith. said casing having an air inlet and an air exhaust, -valves controlling communication between 4said 'inlet' and saidexhaust and the said casthe exhaust and having connection with thevalve of the said air actu-ated means.

JOE M.- PRESSLER. 

